The biggest problem are packages that are either closed source or contains x86-specific assembly that is cumbersome to port to 64-bit (typical for emulators).

TeamSpeak will not support 64-bit until the next version is released.

Acrobat Reader plugin is not available in 64-bit, but you can run the 32-bit version in compatibility mode

Everything else should work perfectly fine. If you miss any Arch32 package in our port and you know that it will compile on x86_64 (perhaps you have found it as native packages in another 64-bit distribution), just contact the devs or request a new package in the forums.

Mogu li graditi 32-bitne pakete za i686 unutar Arch64?

Da. Potreban vam je radni i686 chroot (installation with i686 iso "quickinstall" is recommended for the quick way to install it inside Arch64 or see Arch64 Install bundled 32bit system). Install "linux32" wrapper pkg from current to make the chroot behave like a real i686 system. Then use this script to login into the chroot environment as root: